Dong Jianfeng, Nie Qiuhua. The Study of Analytical Solution and Cutoff Frequency of First-Higher-Order Mode for Elliptical Optical Waveguide[J]. 1995,(3).
Dong Jianfeng, Nie Qiuhua. The Study of Analytical Solution and Cutoff Frequency of First-Higher-Order Mode for Elliptical Optical Waveguide[J]. 1995,(3).DOI:
The analytical solutions of electromagnetic wave equations for elliptical optical waveguide are studied and the mode field distribution is presented. The mode characteristic equations are derived. Circular waveguide is only a special case of elliptical waveguide. The numerical solution for the characteristic equation of first-higher-order mode is obtained. The variations of the effective refractive index as a function of the normalized frequency for various values of the core aspect ratio are presented. As the core aspect ratio increases
the normalized cutoff frequency of the first-higher-order mode decreases.
关键词
椭圆光波导特征方程高阶模截止频率
Keywords
elliptical optical waveguidemode characteristic equationsfirst-higher-order modecutoff frequency